William bedell



INVQJTEIFQ W. BEDELL. SEWER TRAP.

Patented July 19,1881.

Mam 454011766 he m PEYEHS. mmm

(No Model.)

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PATENT we.

WILLIAM BEDELL, OF NEW YORK, N. Y.

SEWER-TRAP.

SPECIFICATION forming part of Letters Patent No. 244,425, dated July 19, 1881.

Application filed March 26, 1880.

To all whom it may concern Be it known that LVWILLIAM BEDELL, of the city, county, and State of New York, have invented certain Improvements in Sewer- Traps, of which the following is a specification.

This invention belongs to that variety of sewer-traps which may with proprietybe called backwater-trapsthat is to say, traps designed to prevent the reflux or regurgitation of water backward through the trap in a direction the reverse to that in which the material flows in the normaluse or operation of the apparatus. As hitherto constructed such traps have'been liable to foul, and have been, as a rule, difficult of access for purposes of internal cleaning.

My invention is designed to obviate such drawbacks; and it consists in a novel combination of parts whereby the accumulation of filth or refuse on the valve is effectually prevented; also, whereby a convenient means of access to the interior of the apparatus is atforded also, whereby the force or pressure of the regurgitating liquid upon the valve and adjacent parts may be relieved under circumstances where such pressure is liable to be excessive.

Figure 1 is a vertical longitudinal sectional view, and Fig. 2 is a plan view, of a sewer-trap embracing my said invention.

A is the body of the trap, made of cast-iron or other suitable material, and of a form substantially such as is represented in Fig. 1. One end, a, of this body A is constructed for attachment to the ordinary conducting-pipe, and near the said end a is a hand-hole, b, which, when required, is closed by a screw-cap, c, or other suitable means. At the opposite end of the body A is a valve, B, the position of this valve, as hereinafter more fully indicated, being an important element in providing for the practical and advantageous operation of my invention. The said valve B belongs to the class very commonly termed a flat valve, and is placed in the inclined position represented in Fig. 1, and pivoted at its uppermost edge by a suitable hinge or pivot, 0.

Above the valve is a valve-chamber, G, in the top of which is an opening, f, which, un-

(No model.)

der ordinary circumstances, is closed by a capplate, g, which is attached or held in position by clamping-bolts i, the lower hooked ends, a, of which pass under the edges of the opening f, and which are provided with screw-nuts c, by which the hooked lower ends, a, are tightened to snugly confine the plate 9 in place.

D is the outlet of the trap, and is provided at its upper part with a vent or passage, m.

The operation of the invention is as follows: The passage of the sewage-water, &c., in the direction of the arrows in Fig. 1, throws the valve B outward and upward into a position more or less approximating that represented in dotted lines in Fig. 1-that is to say, upward, toward, or into the valve-chamber 0- and thereby permits the sewage-water, 850., to pass to the outlet when said sewage-water, 850., is in movement, as just hereinbefore indicated. When, however, no such passage of the sewage is in progress the valve B is caused, by its own gravity, to descend to the closed position represented in the drawings-that is to say, into the inclined position hereinbefore explained-whereupon the outer surface of the said valve is brought into so steep a plane or angle with reference to the horizontal that all the foul matter and refuse materials which would settle upon a valve horizontally placed slide outward and downward from said'outer surface of the valve into the outlet-passage D, so that the valve is never loaded or obstructed by the extraneous deposits regurgitating from the passage D; and, furthermore, this inclined position of the valve B causes it to close against its seat, and more effectually to serve the body than would be possible if it was placed in a perpendicular position, in which its own weight would be practically inoperative to secure its retention in position.

When, for any reason, it is desired to have access to the interior of the apparatus, such access is readily afiorded by removing the cap 0 and the cap-plate g. In case there is any reflux or regurgitation of sewage backward through the outlet D against the valve B, the latter is, of course, pressed against its seat, and prevents the continuance of the influx into or through the body A, while a greater or less portion of the reflowing or regurgitating material passes 011' through the branch pipe or sage m, the outlet-pipe D, the body A, havpassage on to the sewer or to a cesspool, or ing the inclined valve B, and the valve-chest 10 when preferred, to any other suitable recepta- G, constructed with the opening f, all substancle therefor, thereby relieving the apparatus tially as and for the purpose herein set forth.

5 from excessive internal pressure and strain WILLIAM BEDELL.

and liability to leak at the joints. Witnesses:

What I claim as my invention is-- CHAS. HY. DOXAT, The combination of the branch pipe or pas- H. 1*. PARKER. 

